In common usage, most people use the word statistic to refer to research figures and calculations, either from information based on a sample or an entire population. Statistics means different things to different people.
The best way to see the Hollywood Sign is to drive up Beachwood Drive (north of Hollywood Boulevard). The Sign is clearly visible most the way up Beachwood, although the hills begin to obscure the view of the Sign near the top of the drive.
For Universal Studios (which borders Burbank), I would stay in Hollywood. This way you can also see other touristy things like the Hollywood Walk of Fame, Griffith Park, Hollywood Sign etc. Plus, I don't think there is much to see in Burbank.